Device for multiplying the rotation of a shaft



2 Sheets-Sheet l //v VEN TO/PS' M. LACHARITE ET AL Fil ed Feb. 26, 1940 v DEVICE FOR MULTIPLYING THE ROTATION OF A SHAFT Aug, 20, 1940.

Aug. 20, 1940- M. LACHARITE ET AL DEVICE FOR MULTIPLYING THE ROTATION OF A SHAFT 2 Sheets-Shet 2 Filed Feb. -26, 1940 FIG. 4.

{N VENTORS Patented Aug. 20, 1940 UNITED STATES 2,212,321 DEVICE FOR MULTIPLYING THE ROTATION OFA SHAFT Maurice Lacharit and Louis Marie Sallv,

Ville, Lasalle,

Quebec, Canada Application February 26, 1940, Serial No. 320,864

I 1 Claim.

The present invention relates to improvements in a device principally adapted to increase the rotating speed of a driving shaft or spindle, said device being adaptable to automobiles, aeroplanes and all such machines in which high speeds are required.

This device has for its main object to multiply the rotations of a shaft or spindle, or, if desired, reduce the consumption of fuel required to operate said shaft at its normal rate of speed. It is particularly compact, easily adapted and of simple construction. a

It consists broadly of a stationary open end casing provided with a fixed crown gear and through said casing is journalled a driving shaft upon which is fixedly mounted a driving disc carrying a number of loosely mounted intermediate gears adapted to mesh with said crown gear. The open end of said casing it closed by a disc Wheel loosely mounted adjacent the end of said driving shaft, said disc having an outward projecting spindle on one side thereof and on its other side a fixed sprocket gear adapted to engage the intermediate gears mounted upon the driving disc. Upon the projecting spindle may be mounted a driving gear, or pulley adapted to actuate any suitable device, or in the case of an aeroplane, the propeller may be adjusted thereon by any convenient means.

In the drawings: 7

Figure 1 is a side elevation view of one preferred form of the device according to the invention;

Figure 2 is a vertical section through Figure 1;

Figure 3 is a cross section on line 3-3 of Figure 2; I

' Figure 4 is a detail side elevation view of the disc carrying a plurality of gears (thegears'are not shown) and Figure 5 is an end view of Figure 4.

Like numerals of reference indicate corresponding parts in each figure.

Referring to the drawings, the device consists of a stationary circular casing I having a circumferential rib 2 and a centrally disposed hole 3 and ball bearings 4 and 5, and in which is journalled the driving shaft 6. The shaft 6 preferably projects through the hole 3 and is provided with a driving disc wheel 7 fixedly mounted thereon and adapted to rotate within said casing I. Upon one of the faces of said disc are provided a plurality of radially disposed and suitably distanced projecting stub-shafts 8 upon which are rotatively mounted the intermediate gears 9,.

each of which are preferably of thesame size and adapted to mesh with the crown gear ll fixedly mounted upon the circumferential rib 2 of the casing.

Adjacent the end of the driving shaft 6 is mounted, parallel to the driving disc .and in alignment therewith, the loosely rotating disc wheel l2. Said disc Wheel l2 has a recessed hub portion l3 in which may be provided ball bearing l4 and suitable means to retain said disc in operating position. Upon the inner face is fixedly mounted a gear l5 which coacts with the gears 9. The disc, when in operating position, closes the open end of the casing I, and upon its circular flange 93 may be secured any suitable means to impart motion to a machine or in the case of an aeroplane, a propeller may be secured directly thereupon.

is fixed to the stationary casing 5, thus imparting motion to the gear i5, and thus multiplying the revolutions of the driving shaft 6. The speed of the said disc I2 is proportional to the size of the gear l5.

Said disc also acts as a fly-wheel, thus reducing the amount of energy required to actuate it. The

still impart its normal speed to the device. It is evident that at the normal speed of the motor, a considerable economy in fuel will result.

It is understood that only a preferred form of the device is herein disclosed and that modifications may be made thereto without departing ifrom the spirit and scope of the present invenion.

a crown gear fixedly mounted upon said casing, a driving disc disposed and looked upon said driving shaft and located within said stationary casing, said disc LOUIS MARIE SAUVE. 

